Abstract

In this article, we report a facile and inexpensive approach to synthesize fractal-like interconnected network of carbon nanoparticles from candle soot and its direct application as anode material for high-rate lithium ion batteries used for electric vehicles. At low charge/discharge rate (0.5C), an initial discharge capacity was found to be 1997 mAh/g with moderate 30% coulombic efficiency that increased to 91% after 10 cycles. More importantly, at very high charge/discharge rate (10C), reversible capacity was stabilized at 170 mAh/g even after 1000 cycles. This remarkable electrochemical performance may be ascribed to unique morphology of these hard carbon nanoparticles that reduces the diffusion length and also allows fast adsorption/desorption of Li ions on their surface.

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IITH Creators:

IITH Creators

ORCiD

Sharma, C S

UNSPECIFIED

Item Type:

Article

Additional Information:

Authors
acknowledge
the
Indian
Institute
of
Technology,
Hyderabad
for
providing
necessary
research
infrastructure
to
carry
out
this
work.
M.
Kakunuri
acknowledges
Suresh
Kali
for
his
help
in
SAXS
experiment
and
analysis.
Initial
discussion
with
M.
Pavan
on
candle
soot
wettability
is
also
acknowledged.